invest in your future - voya financial ecap participant— as part of the firm’s total rewards...

Dear ECAP Participant—

As part of the firm’s Total Rewards program, Booz Allen offers the Employees’ Capital Accumulation Plan (ECAP) tohelp you plan and save money for your retirement. ECAP allows you to accumulate savings through a wide range ofinvestment options to help you to implement an effective retirement strategy. For 2010, ECAP will continue to offer you3 distinct ways to save—firm-contributed profit sharing, a voluntary 401(k) contribution component, and a rolloveroption—which you can learn more about on people.bah.com.

The ECAP Trustees review the program on an ongoing basis to ensure ECAP provides participants with a choice ofinvestment options, while striving to minimize the administrative fees that are often associated with retirement accounts.To that end, I am pleased to announce the following new investment fund options and administrative updates to ECAPthat will take effect on March 26, 2010.

1. BlackRock’s LifePath® “Target Date” Funds to Replace State Street Balanced FundTarget date retirement funds have become an increasingly popular investment option because they offera way to diversify investments based on each individual’s anticipated retirement date. Assets within theLifePath Funds are allocated across asset classes with varying levels of investment risk, based on youranticipated retirement date and automatically shift into traditionally more conservative holdings as youmove toward this anticipated retirement date. The LifePath Funds will replace the current BalancedFund, which contains a mix of asset classes but does not automatically adjust its asset allocation basedon a participant’s anticipated retirement date. If you have funds invested in the Balanced Fund, theywill automatically be transferred into the Target Date fund default option, which is based on when youwill turn age 65, unless you choose to move your funds to different investment options prior to theMarch 26, 2010 transfer date.

In addition to providing plan participants with a new investment choice, BlackRock’s LifePath® TargetDate Funds will replace the SSgA Balanced Fund as the default option for those participants whomake no investment choices. You will be notified in the coming weeks of the transition process fromthe Balanced Fund to the new Target Date Funds. For more details on this option, refer to the invest-ment fund fact sheet that is enclosed.

2. U.S. Stock Fund Investment Manager ChangeAfter an extensive review of fund performance and our fundamental investment philosophy, the ECAPTrustees have decided to transition the investment management for the actively managed U.S. StockFund from the current provider, State Street Global Advisors (SSgA), to T. Rowe Price. The new nameof this fund will be T. Rowe Price U.S. Structured Research Strategy Fund. T. Rowe Price has astrong, long-term track record of solid investment results when compared to its benchmark index (S&P500) and an expense ratio that is lower than that of its peer group. For more details on this option, referto the investment fund fact sheet that is enclosed.

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Invest In Your Future

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3. Going GreenIn line with the firm’s sustainability focus, and to simplify account tracking and access for staff, ECAPparticipants can now elect to receive quarterly account and transaction confirmation statements electroni-cally rather than through standard mail. As you access your quarterly statement via the ECAP Web site,you will be prompted to elect this new “green” option, turn off receipt of paper statements, and providean e-mail address (whether personal or work e-mail) for receipt of electronic statements. You maychange your election at any time and revert to paper statements. Those who prefer to continue to receivepaper statements may do so.

4. Loan Fee Changes A $50 fee per loan transaction will be assessed to participants who take a loan from their ECAP account.

5. $25 Expedited FeeA $25 expedited fee will be assessed to participants who request that a check—whether a loan check ora distribution check—be delivered to them over night.

More information, including a brochure that overviews the entire ECAP program, will be mailed to your home by the endof March to provide additional information about this valuable investment and profit-sharing program. I encourage you toreview all of the materials carefully to ensure you are investing for your future in the way that works best for you. In addition, within the next few weeks, we will host Webinars to provide you with the opportunity to learn more aboutthese offerings.

You may wish to discuss the new investment options with a trusted financial advisor when planning for your future. Youcan also visit the ECAP Web site (ecap.ingplans.com) to check your account balance, update your investment options, orreceive additional information, or contact the ECAP Information Line at 888/530-3227 (ECAP).

For security reasons, participants must use their Personal Identification Number (PIN) to access account information. Ifyou do not have your PIN, you can call the ECAP Information Line or visit the ECAP Web site to request a PIN reminder.Your PIN will be mailed to your address of record upon request.

The ECAP Trustees will continue to evaluate this important program each year to ensure that you have access to retire-ment options through the firm that are competitive in the market and meet your individual needs.

Best Regards,

Jimmy HenryECAP Trustee Chair

Invest In Your Future

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IMPORTANT INFORMATION ABOUT YOUR RETIREMENT PLAN ACCOUNT

To all Participants in the Booz Allen Hamilton Inc. Employees’ Capital Accumulation Plan: You are receiving this notice because you are a participant in the Booz Allen Hamilton Inc. Employees’ Capital Accumulation Plan (“ECAP”). As a participant in ECAP, you have the right to direct your contributions among any of the investment options available in ECAP. If you do not make an election for the investment of the assets in your ECAP account, your account assets will be invested automatically in ECAP’s qualified default investment alternative fund (“Designated Fund”) until you make an investment election. In the past, the Balanced Fund was the ECAP Designated Fund. However, effective March 26, 2010, the Designated Fund is one of the BlackRock LifePath Funds, which are managed by BlackRock Institutional Trust Company. The Designated Fund applicable to you is determined by your expected year of retirement, assuming a retirement age of 65. The BlackRock LifePath Funds include: BlackRock LifePath Income; BlackRock LifePath 2015, BlackRock LifePath 2020; BlackRock LifePath 2025, BlackRock LifePath 2030, BlackRock LifePath 2035, BlackRock LifePath 2040, BlackRock LifePath 2045, BlackRock LifePath 2050 and BlackRock LifePath 2055. It is intended that each Designated Fund constitute a “qualified default investment alternative” under the rules issued by the Department of Labor. A brief description of each Designated Fund, including the investment objectives, risk and return characteristics, fees and expenses and any restrictions on your ability to transfer or direct your money out of the Designated Fund, is included in the Fund Fact Sheets which are made a part of this notice. You are permitted to change your investment election to any other investment alternative under ECAP at any time. To direct or change where your ECAP account assets are invested, or for additional information about ECAP and all the investments available, please refer to your plan materials, visit the ECAP Web site at https://ecap.ingplans.com or contact the ECAP Information Line toll free at 1-888-530-ECAP (3227). Sincerely, The Booz Allen Hamilton Inc. ECAP Administrative Committee 8283 Greensboro Drive McLean, VA (703) 902-5000